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Friction nano-generator for capturing wind energy and sound energy

A nano-generator and nano-power generation technology, which is applied in friction generators, wind power generation, and wind power generators in the same direction as the wind, can solve the problems of lack of simultaneous capture of wind energy and sound energy, weak output effects, etc., and achieve open-circuit voltage enhancement , the effect of improving the output performance

Active Publication Date: 2020-09-08
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A variety of devices for capturing wind energy and sound energy have been designed at present, but most of them are devices for separately capturing wind energy or sound energy. Acoustic Devices

Method used

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  • Friction nano-generator for capturing wind energy and sound energy
  • Friction nano-generator for capturing wind energy and sound energy
  • Friction nano-generator for capturing wind energy and sound energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example one, such as figure 1 As shown, a friction nanogenerator for capturing wind and sound energy includes a wind-driven friction nanometer power generation device and a sound-driven friction nanometer power generation device.

[0034] The wind-driven friction nano power generation device includes a 28 cm diameter windmill 1, three pieces of polytetrafluoroethylene friction layer (PTFE) 2 attached to the windmill 1, and two complementary conductive fabrics 3 made of interdigital electrodes. In order to facilitate the fixation of the interdigital electrodes, a disc 6 made of acrylic plate was made. First, the acrylic plate was cut into a radial disc (outer diameter 19cm) with a laser engraving machine as the wind-driven friction nano generator The bracket, the disc 6 is composed of six fan-shaped parts, each of which has a radius of 7 cm and a central angle of 60°.

[0035] Two conductive fabrics 3 are pasted on the disc 6 by double-sided tape and separated by a small gap ...

Embodiment 2

[0039] Example 2: The polyvinylidene fluoride-trifluoroethylene nanofiber membrane and the conductive fabric in Example 1 are analyzed, and the results are as follows figure 2 with 3 Shown.

[0040] figure 2 Shows the SEM image of the polyvinylidene fluoride-trifluoroethylene nanofiber membrane prepared by a domestic electrospinning device (equipped with a rotating drum collector). The average diameter of the polyvinylidene fluoride-trifluoroethylene nanofiber membrane is Composed of 100nm polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) nanofibers, the nanofibers look straight and uniform.

[0041] image 3 The SEM image of the conductive fabric is shown, which is a square array of micro-holes with a side length of 65 μm. The inherent rectangular micro-hole structure in the conductive fabric is beneficial to the transmission of sound to the friction layer of the polyvinylidene fluoride-trifluoroethylene nanofiber membrane.

Embodiment 3

[0042] The third embodiment analyzes the mechanism of wind energy collected by the wind-driven friction nano power generation device and sound wave energy collected by the sound driven friction nano power device in the first embodiment.

[0043] The wind-driven friction nano power generation device is a kind of friction nano generator based on the independent layer mode. The interdigital electrode made of conductive fabric on the stator (disk 6) and the rotor (windmill 1) are on the polytetrafluoroethylene friction layer (PTFE). Under the relative rotational movement of ), AC power is supplied to the external load. Such as Figure 4 As shown, the first contact electrode of the PTFE membrane is marked as electrode F, and the electrode next to electrode F is named electrode N. In the initial state ( Figure 4 -i) Once the PTFE membrane is in physical contact with the electrode F, the surface of the PTFE membrane is negatively charged due to the different polarities of different fri...

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Abstract

The invention discloses a friction nano-generator for capturing wind energy and sound energy, and relates to the field of nano power generation. The friction nano-generator comprises a wind-driven friction nano power generation device and a sound-driven friction nano power generation device, wherein the wind-driven friction nanometer power generation device comprises a windmill, three polytetrafluoroethylene friction layers attached to the windmill and two complementary interdigital electrodes made of conductive fabric, and the sound-driven friction nano power generation device comprises a polyvinylidene fluoride-trifluoroethylene nano fiber membrane. According to the invention, the wind-driven friction nano power generation device captures wind energy; in the sound-driven friction nano power generation device, the electrostatic spinning polyvinylidene fluoride-trifluoroethylene nano fiber membrane is used as a friction layer to capture sound energy; and the wind-driven friction nanometer power generation device and the sound-driven friction nanometer power generation device are organically combined by taking the conductive fabric as a common electrode, so that the coupling effectbetween the wind-driven friction nanometer power generation device and the sound-driven friction nanometer power generation device is facilitated to be analyzed, and the output performance can be improved.

Description

Technical field [0001] The invention relates to the field of nano power generation, in particular to a friction nano generator for capturing wind energy and acoustic energy. Background technique [0002] Triboelectricity is one of the most common phenomena in nature, but it is difficult to collect and use triboelectricity, so it is often ignored. As an emerging energy capture technology, the triboelectric nanogenerator (TENG) is dominated by the displacement current derived from Maxwell's equations, through the coupling of triboelectricity and electrostatic induction, to capture mechanical energy and convert it into electrical energy. When two different materials are in contact, their surfaces will generate positive and negative electrostatic charges due to the difference in polarity. When the two materials are separated due to mechanical force, the positive and negative charges generated by contact will also be separated. This kind of charge separation will correspondingly gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04F03D9/25F03D1/06
CPCH02N1/04F03D9/25F03D1/06Y02E10/72
Inventor 吴永辉王飞宇郑海务王志新王清林张嘉伟
Owner HENAN UNIVERSITY
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